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<h1> Tools for splitting, applying and combining data
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</div><h2>Documentation for package &lsquo;plyr&rsquo; version 1.7.1</h2>

<ul><li><a href="../DESCRIPTION">DESCRIPTION file</a>.</li>
<li><a href="../NEWS">Package NEWS</a>.</li>
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<h2>Help Pages</h2>


<table width="100%">
<tr><td width="25%"><a href="quoted.html">.</a></td>
<td>Quote variables to create a list of unevaluated expressions for later evaluation.</td></tr>
<tr><td width="25%"><a href="aaply.html">aaply</a></td>
<td>Split array, apply function, and return results in an array.</td></tr>
<tr><td width="25%"><a href="adply.html">adply</a></td>
<td>Split array, apply function, and return results in a data frame.</td></tr>
<tr><td width="25%"><a href="alply.html">alply</a></td>
<td>Split array, apply function, and return results in a list.</td></tr>
<tr><td width="25%"><a href="arrange.html">arrange</a></td>
<td>Order a data frame by its colums.</td></tr>
<tr><td width="25%"><a href="as.data.frame.function.html">as.data.frame.function</a></td>
<td>Make a function return a data frame.</td></tr>
<tr><td width="25%"><a href="as.quoted.html">as.quoted</a></td>
<td>Convert input to quoted variables.</td></tr>
<tr><td width="25%"><a href="a_ply.html">a_ply</a></td>
<td>Split array, apply function, and discard results.</td></tr>
<tr><td width="25%"><a href="baseball.html">baseball</a></td>
<td>Yearly batting records for all major league baseball players</td></tr>
<tr><td width="25%"><a href="colwise.html">catcolwise</a></td>
<td>Column-wise function.</td></tr>
<tr><td width="25%"><a href="colwise.html">colwise</a></td>
<td>Column-wise function.</td></tr>
<tr><td width="25%"><a href="count.html">count</a></td>
<td>Count the number of occurences.</td></tr>
<tr><td width="25%"><a href="create_progress_bar.html">create_progress_bar</a></td>
<td>Create progress bar.</td></tr>
<tr><td width="25%"><a href="daply.html">daply</a></td>
<td>Split data frame, apply function, and return results in an array.</td></tr>
<tr><td width="25%"><a href="ddply.html">ddply</a></td>
<td>Split data frame, apply function, and return results in a data frame.</td></tr>
<tr><td width="25%"><a href="defaults.html">defaults</a></td>
<td>Set defaults.</td></tr>
<tr><td width="25%"><a href="desc.html">desc</a></td>
<td>Descending order.</td></tr>
<tr><td width="25%"><a href="dlply.html">dlply</a></td>
<td>Split data frame, apply function, and return results in a list.</td></tr>
<tr><td width="25%"><a href="d_ply.html">d_ply</a></td>
<td>Split data frame, apply function, and discard results.</td></tr>
<tr><td width="25%"><a href="each.html">each</a></td>
<td>Aggregate multiple functions into a single function.</td></tr>
<tr><td width="25%"><a href="failwith.html">failwith</a></td>
<td>Fail with specified value.</td></tr>
<tr><td width="25%"><a href="idata.frame.html">idata.frame</a></td>
<td>Construct an immutable data frame.</td></tr>
<tr><td width="25%"><a href="quoted.html">is.quoted</a></td>
<td>Quote variables to create a list of unevaluated expressions for later evaluation.</td></tr>
<tr><td width="25%"><a href="join.html">join</a></td>
<td>Join two data frames together.</td></tr>
<tr><td width="25%"><a href="laply.html">laply</a></td>
<td>Split list, apply function, and return results in an array.</td></tr>
<tr><td width="25%"><a href="ldply.html">ldply</a></td>
<td>Split list, apply function, and return results in a data frame.</td></tr>
<tr><td width="25%"><a href="liply.html">liply</a></td>
<td>Experimental iterator based version of llply.</td></tr>
<tr><td width="25%"><a href="llply.html">llply</a></td>
<td>Split list, apply function, and return results in a list.</td></tr>
<tr><td width="25%"><a href="l_ply.html">l_ply</a></td>
<td>Split list, apply function, and discard results.</td></tr>
<tr><td width="25%"><a href="maply.html">maply</a></td>
<td>Call function with arguments in array or data frame, returning an array.</td></tr>
<tr><td width="25%"><a href="match_df.html">match_df</a></td>
<td>Extract matching rows of a data frame.</td></tr>
<tr><td width="25%"><a href="mdply.html">mdply</a></td>
<td>Call function with arguments in array or data frame, returning a data frame.</td></tr>
<tr><td width="25%"><a href="mlply.html">mlply</a></td>
<td>Call function with arguments in array or data frame, returning a list.</td></tr>
<tr><td width="25%"><a href="mutate.html">mutate</a></td>
<td>Mutate a data frame by adding new or replacing existing columns.</td></tr>
<tr><td width="25%"><a href="m_ply.html">m_ply</a></td>
<td>Call function with arguments in array or data frame, discarding results.</td></tr>
<tr><td width="25%"><a href="colwise.html">numcolwise</a></td>
<td>Column-wise function.</td></tr>
<tr><td width="25%"><a href="ozone.html">ozone</a></td>
<td>Monthly ozone measurements over Central America.</td></tr>
<tr><td width="25%"><a href="progress_text.html">progress_text</a></td>
<td>Text progress bar.</td></tr>
<tr><td width="25%"><a href="progress_tk.html">progress_tk</a></td>
<td>Graphical progress bar, powered by Tk.</td></tr>
<tr><td width="25%"><a href="progress_win.html">progress_win</a></td>
<td>Graphical progress bar, powered by Windows.</td></tr>
<tr><td width="25%"><a href="quoted.html">quoted</a></td>
<td>Quote variables to create a list of unevaluated expressions for later evaluation.</td></tr>
<tr><td width="25%"><a href="raply.html">raply</a></td>
<td>Replicate expression and return results in a array.</td></tr>
<tr><td width="25%"><a href="rbind.fill.html">rbind.fill</a></td>
<td>Combine data.frames by row, filling in missing columns.</td></tr>
<tr><td width="25%"><a href="rbind.fill.matrix.html">rbind.fill.matrix</a></td>
<td>Bind matrices by row, and fill missing columns with NA.</td></tr>
<tr><td width="25%"><a href="rdply.html">rdply</a></td>
<td>Replicate expression and return results in a data frame.</td></tr>
<tr><td width="25%"><a href="rename.html">rename</a></td>
<td>Modify names by name, not position.</td></tr>
<tr><td width="25%"><a href="rlply.html">rlply</a></td>
<td>Replicate expression and return results in a list.</td></tr>
<tr><td width="25%"><a href="round_any.html">round_any</a></td>
<td>Round to multiple of any number.</td></tr>
<tr><td width="25%"><a href="r_ply.html">r_ply</a></td>
<td>Replicate expression and discard results.</td></tr>
<tr><td width="25%"><a href="splat.html">splat</a></td>
<td>'Splat' arguments to a function.</td></tr>
<tr><td width="25%"><a href="strip_splits.html">strip_splits</a></td>
<td>Remove splitting variables from a data frame.</td></tr>
<tr><td width="25%"><a href="summarise.html">summarise</a></td>
<td>Summarise a data frame.</td></tr>
<tr><td width="25%"><a href="summarise.html">summarize</a></td>
<td>Summarise a data frame.</td></tr>
<tr><td width="25%"><a href="vaggregate.html">vaggregate</a></td>
<td>Vector aggregate.</td></tr>
</table>
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